In the third chapter , cpld design process of spwm speed adjusting system is shown , including design idea , detailed scheme and logic timing analysis . both simulation and experiment results are shown for comparison 第三章详细介绍了spwm调速系统整个系统的cpld设计,给出了设计思路、具体方案、逻辑时序分析;最后给出了软件仿真结果和实验波形对照。
Spwm , svpwm are introduced in detail . furthermore , cpld design process of spwm and svpwm speed adjusting system is shown , including design idea , detailed scheme and logic timing analysis . finally , the experiments are shown 并且详细介绍了spwm调速系统和svpwm调速控制系统的cpld设计,给出了设计思路,具体方案,逻辑时序分析,得到了实验结果。